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Фрагмент инструкции
The 1590E provides 200 watts of power at less than 1% total harmonic distortion (THD) from 50 Hz to 12 kHz, and has a frequency response of -1 dB from 20 Hz to 20 kHz at one watt output. Output transformer taps provide connections for 70.7. 100. 140 and 200 volt line distribution systems. The 1590E features silicon solid-state circuitry, a switchable high-pass filter for use in speech systems, input connections for high impedance devices and for 150/600 ohm or 15,000 ohm balanced inputs, fail-safe protection for output transistors, and a hinged front panel for rapid access to the chassis interior. The 1590E is capable of operation from a negative grounded 24/28 V DC source. The 1590E is UL listed for use in commercial audio systems and fire protective signaling systems. Designed for rack-mounted use, the 1590E occupies six units of vertical space, 10.5 inches (26.7 cm). Gain: Input Sensitivity: Power Output: Frequency Response: Input Impedance: Load Impedance: Load Voltage: Output Impedance: Noise Level: Operating Temperature Range: Controls: Power Required: Special Features: 67 dB. 0.8 Vrms for rated output. 200 watts at less than 1% THD from 50 Hz to 12 kHz. ±1 dB, 20 Hz to 20 kHz at 1 watt output. ±1 dB, 50 Hz to 12 kHz at rated output. 15 kohms. 15 kohms balanced with 15335A Line Transformer. 150/600 ohms balanced with 15095A Line Transformer. 25, 50,100, and 200 ohms. 70.7,100,140 and 200 volts. Less than 25% of nominal load impedance. Output noise 85 dB below rated output. Up to 55°C (131°F). 1 VOLUME control, continuously variable. 1 power OFF-ON switch. 1 high-pass filter switch. 100/120/220/240 AC, 50/60 Hz, 25 Wat zero signal, 420Wat 200Woutput, -or-24/28 V DC (battery (-) is ground), 0.2 A at zero signal, 14 A at 200 W output. Automatic transfer from AC to DC power in the event of AC power failure. Dissipation sensing circuit for protection of output transistors. High-pass filters. CONDUIT -- KNOCKOUTS FOR SPEAKER WIRING TRANSFORMER - ACCESSORY RECEPTACLE I VOLTAGE RATING NAMEPLATE BATTERY TERMINAL BOARD BATTERY FUSE HEAT SINK SHROUD FILTER SWITCH INPUT TERMINAL BOARD Figure 2. Rear View of 1590 Power Amplifier Terminal Bloc Transformer T Wire Color k TB8/TB 1 100 V 9 Connec 120 V tions 240V Brown White Black White-Brown White-Black TB9-4 TB8-4 TB9-7 TB9-1 TB9-8 TB8-4 TB9-4 TB9-7 TB8-3 TB9-8 TB8-4 TB9-2 TB9-5 TB9-4 TB9-8 Permanent AC Pow Pilot Light S2-4 AC Cord (black) AC Cord (white) Switch SW2-3 Fuse F1-2 Capacitor C7 Capacitor C6 ✓er Connections* TB9-6 TB8-9 TB9-9 TB8-5 TB8-8 TB9-10 TB8-10 *Do not make any wiring changes of these wire connections when altering the amplifier for different primary power operating voltage. Figure 3. Primary Power Conversion Chart for 100V, 120V, and 240V 50/60 Hz Operation 4. Select the appropriate voltage rating label from the rating label strip supplied with the amplifier. Affix label over previous voltage rating designation on chassis. See Figure 2. 5. When 1590 Is strapped for 200V or 240V line power, replace front panel fuse (F1) with 2A, 250V, slo-blo type fuse. 6. Close front panel and secure with four screws previously removed. Battery Connections If desired, the 1590 may be connected to an external 24/28 volt battery with minus (-) as ground. Terminals for the dc power connections are on TB4 (see Figure 2). If ac power fails, transfer to dc power is instantaneous, autoamtic and silent. The battery ower supply Is not operated by the primary power ON-OFF switch on the front panel. If switching of battery power is desired, an external relay or switch should be provided by the user. Input Connections Input connections may be either direct or transformer-isolated at the INPUT terminal board (TB1) (see Figure 2). Direct coupling is accomplished by connecting the Input leads (shielded conductor recommended) to terminals 1 and 2. Terminal 2 Is ground (see Figure 4). For transformer-isolated input, a plug-ln 15095A or 15335A Line Transformer must be plugged into receptacle J1 (see Figure 2). INPUT 0